Brief introduction to the working principle and application scope of eddy current sensor

Brief introduction to the working principle and application scope of eddy current sensor

The eddy current sensor can measure the distance between the measured metal conductor and the probe surface in a static and dynamic non-contact, high linearity and high resolution.

The eddy current sensor can measure the distance between the measured metal conductor and the probe surface in a static and dynamic non-contact, high linearity and high resolution.

It is a non-contact linearized metrology tool. Eddy current sensors can accurately measure the static and dynamic relative displacement changes between the measured body (must be a metal conductor) and the probe end face.

Brief introduction to the working principle and application scope of eddy current sensor

The principle of the eddy current sensor is to accurately measure the relative position of the measured object (must be a metal conductor) and the end face of the probe through the principle of the eddy current effect. Contact measurement, fast response speed, not affected by medium such as oil and water, are often used for long-term real-time monitoring of parameters such as shaft displacement, shaft vibration, shaft speed and other parameters of large rotating machinery, and can analyze the working status of the equipment and the cause of failure, Effectively protect and pre-repair equipment.

Applications of Eddy Current Displacement Sensors

By measuring the relative position of the metal measured body and the probe end face, the eddy current displacement sensor senses and processes it into a corresponding electrical signal output. The sensor can work reliably for a long time, has high sensitivity, strong anti-interference ability, non-contact measurement, fast response speed and is not affected by oil and water and other media. It is widely used and has been extended to satellite launch, material identification, weighing measurement, metal plate thickness measurement, material deformation measurement and other application fields.

Brief introduction to the working principle and application scope of eddy current sensor

complete sensor system

A complete sensor system mainly includes probes, extension cables (users can choose according to their needs), pre-conditioners and accessories. ZA21 series eddy current sensor pre-installer, easy to install, there are two installation methods (called: ZA01 pre-installer, ZA02 pre-installer). ZA01 front-end device adopts DIN35 guide rail installation structure, ZA02 front-end device adopts bottom plate screw installation structure.

Compatibility with similar products

The performance indicators of ZA21 series eddy current displacement sensor are equivalent to or close to the level of 3300 series products of Bentley (BN) company in the United States, and are superior to similar products of any domestic company; 3300, 7200 series front end is the same.

Brief introduction to the working principle and application scope of eddy current sensor

interchangeability

After several years of continuous exploration by technicians, the problem of interchangeability between the probe and the front end of the eddy current sensor has finally been solved. With our products, you no longer have to worry about interchangeability. As long as it is our company’s products, the probes and preamplifiers with the same length of coaxial cable can be interchanged!

Extended range

All size probes can extend the measurement range to about three-quarters of the probe diameter.

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